Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach

<b>Background:</b> Both bromodomain and extra-terminal domain (BET) proteins and spleen tyrosine kinase (SYK) represent promising targets in diffuse large B-cell (DLBCL) and Burkitt’s lymphoma (BL). We evaluated the anti-lymphoma activity of the isoform-specific bivalent BET inhibitor AZ...

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Main Authors: Sina Sender, Ahmad Wael Sultan, Daniel Palmer, Dirk Koczan, Anett Sekora, Julia Beck, Ekkehard Schuetz, Leila Taher, Bertram Brenig, Georg Fuellen, Christian Junghanss, Hugo Murua Escobar
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Cancers
Subjects:
Online Access:https://www.mdpi.com/2072-6694/14/19/4691
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author Sina Sender
Ahmad Wael Sultan
Daniel Palmer
Dirk Koczan
Anett Sekora
Julia Beck
Ekkehard Schuetz
Leila Taher
Bertram Brenig
Georg Fuellen
Christian Junghanss
Hugo Murua Escobar
author_facet Sina Sender
Ahmad Wael Sultan
Daniel Palmer
Dirk Koczan
Anett Sekora
Julia Beck
Ekkehard Schuetz
Leila Taher
Bertram Brenig
Georg Fuellen
Christian Junghanss
Hugo Murua Escobar
author_sort Sina Sender
collection DOAJ
description <b>Background:</b> Both bromodomain and extra-terminal domain (BET) proteins and spleen tyrosine kinase (SYK) represent promising targets in diffuse large B-cell (DLBCL) and Burkitt’s lymphoma (BL). We evaluated the anti-lymphoma activity of the isoform-specific bivalent BET inhibitor AZD5153 (AZD) and the pan-BET inhibitor I-BET151 (I-BET) as single agents and in combination with SYK inhibitor Entospletinib (Ento) in vitro. <b>Methods:</b> The effect of the single agents on cell proliferation and metabolic activity was evaluated in two DLBCL and two BL cell lines. Proliferation, metabolic activity, apoptosis, cell cycle and morphology were further investigated after a combined treatment of AZD or I-BET and Ento. RNAseq profiling of combined AZD+Ento treatment was performed in SU-DHL-4 cells. <b>Results:</b> Both BET inhibitors reduced cell proliferation and metabolic activity in a dose- and time-dependent manner. Combined BET and SYK inhibition enhanced the anti-proliferative effect and induced a G0/G1 cell cycle arrest. SU-DHL-4 demonstrated a pronounced modulation of gene expression by AZD, which was markedly increased by additional SYK inhibition. Functional enrichment analyses identified combination-specific GO terms related to DNA replication and cell division. Genes such as <i>ADGRA2</i>, <i>MYB</i>, <i>TNFRSF11A</i>, <i>S100A10</i>, <i>PLEKHH3</i>, <i>DHRS2</i> and <i>FOXP1-AS1</i> were identified as possible key regulators. <b>Conclusion:</b> Simultaneous inhibition of BET and SYK enhanced the anti-proliferative effects, and induced a combination-specific gene expression signature.
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spelling doaj.art-56228acb4cf34b3f9b77e6af0badb6702023-11-23T19:55:01ZengMDPI AGCancers2072-66942022-09-011419469110.3390/cancers14194691Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro ApproachSina Sender0Ahmad Wael Sultan1Daniel Palmer2Dirk Koczan3Anett Sekora4Julia Beck5Ekkehard Schuetz6Leila Taher7Bertram Brenig8Georg Fuellen9Christian Junghanss10Hugo Murua Escobar11Hematology, Oncology, Palliative Medicine, Department of Medicine, Clinic III, Rostock University Medical Center, 18057 Rostock, GermanyHematology, Oncology, Palliative Medicine, Department of Medicine, Clinic III, Rostock University Medical Center, 18057 Rostock, GermanyInstitute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, GermanyInstitute for Immunology, Core Facility Genomics, Rostock University Medical Center, 18057 Rostock, GermanyHematology, Oncology, Palliative Medicine, Department of Medicine, Clinic III, Rostock University Medical Center, 18057 Rostock, GermanyChronix Biomedical GmbH, 37079 Goettingen, GermanyChronix Biomedical GmbH, 37079 Goettingen, GermanyInstitute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, GermanyInstitute of Veterinary Medicine, University of Goettingen, 37077 Goettingen, GermanyInstitute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, GermanyHematology, Oncology, Palliative Medicine, Department of Medicine, Clinic III, Rostock University Medical Center, 18057 Rostock, GermanyInstitute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, Germany<b>Background:</b> Both bromodomain and extra-terminal domain (BET) proteins and spleen tyrosine kinase (SYK) represent promising targets in diffuse large B-cell (DLBCL) and Burkitt’s lymphoma (BL). We evaluated the anti-lymphoma activity of the isoform-specific bivalent BET inhibitor AZD5153 (AZD) and the pan-BET inhibitor I-BET151 (I-BET) as single agents and in combination with SYK inhibitor Entospletinib (Ento) in vitro. <b>Methods:</b> The effect of the single agents on cell proliferation and metabolic activity was evaluated in two DLBCL and two BL cell lines. Proliferation, metabolic activity, apoptosis, cell cycle and morphology were further investigated after a combined treatment of AZD or I-BET and Ento. RNAseq profiling of combined AZD+Ento treatment was performed in SU-DHL-4 cells. <b>Results:</b> Both BET inhibitors reduced cell proliferation and metabolic activity in a dose- and time-dependent manner. Combined BET and SYK inhibition enhanced the anti-proliferative effect and induced a G0/G1 cell cycle arrest. SU-DHL-4 demonstrated a pronounced modulation of gene expression by AZD, which was markedly increased by additional SYK inhibition. Functional enrichment analyses identified combination-specific GO terms related to DNA replication and cell division. Genes such as <i>ADGRA2</i>, <i>MYB</i>, <i>TNFRSF11A</i>, <i>S100A10</i>, <i>PLEKHH3</i>, <i>DHRS2</i> and <i>FOXP1-AS1</i> were identified as possible key regulators. <b>Conclusion:</b> Simultaneous inhibition of BET and SYK enhanced the anti-proliferative effects, and induced a combination-specific gene expression signature.https://www.mdpi.com/2072-6694/14/19/4691BETI-BET151AZD5153entospletinibSYKgene expression
spellingShingle Sina Sender
Ahmad Wael Sultan
Daniel Palmer
Dirk Koczan
Anett Sekora
Julia Beck
Ekkehard Schuetz
Leila Taher
Bertram Brenig
Georg Fuellen
Christian Junghanss
Hugo Murua Escobar
Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach
Cancers
BET
I-BET151
AZD5153
entospletinib
SYK
gene expression
title Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach
title_full Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach
title_fullStr Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach
title_full_unstemmed Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach
title_short Evaluation of the Synergistic Potential of Simultaneous Pan- or Isoform-Specific BET and SYK Inhibition in B-Cell Lymphoma: An In Vitro Approach
title_sort evaluation of the synergistic potential of simultaneous pan or isoform specific bet and syk inhibition in b cell lymphoma an in vitro approach
topic BET
I-BET151
AZD5153
entospletinib
SYK
gene expression
url https://www.mdpi.com/2072-6694/14/19/4691
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